Can I obtain my court file?

You probably can just go to the clerks office, but you need to ask your attorney these questions as they are most familiar with your case. Good luck.

Do I need a lawyer?

Can't see the need for an attorney, but you might consider contacting the police. They will advise.

If a judge imposes 5 years of parole at sentencing, can parole then give a longer term?

Parole board will control the final say depending on your conduct.

Can't say for sure without seeing how it was used on your background.

Is it legal if I stay until I get my green card? and would it affect the affect the processes?

Moving question to immigration category for answers.

Is information disclosed to a defendant during a discovery deposition considered public record if not yet filed with court?

These details are all issues you need to address with your attorney. This is too complex for a general Q&A forum. Good luck.

I was advised to apply for daca ?

Moving question to immigration category for answers.

HHow can I still be charged with a felony if the monetary value is repaid before trial?

You need to ask your attorney this question, but making restitution does not take away from the fact a crime was committed.

Can I find out what the outcome of an arrest 30 years ago was??

It depends. You could start by making a trip down to the courthouse for more information.

Call a few local criminal lawyers as most will handle expungements.